Epson Stylus COLOR 900 Service Manual page 132

EPSON Stylus COLOR 900/900N
7. To input the printhead ID, select Input data. The adjustment
program requests the version of your current PROM:
Figure 5-9. ROM Version Selection
8. Select Old ROM if the ROM's serial number is TEE01A, TEE01B, or
TEE01C. Otherwise, select New ROM.
After you enter the ROM version, the adjustment program requests
the printhead ID:
Figure 5-10. Printhead ID Input
9. Enter the 22-digit printhead ID.
T
NOTE: The printhead ID includes a checksum digit; if you make a
mistake in typing the ID, the software automatically
prompts you to enter it again.
T
If you installed a new printhead but the ROM is the old
version, the software requires you to replace the old ROM
with a new one (TEE01D or later). Old ROMs do not
support the newer printheads.
Chapter 5 Adjustments
129